Flaws in Computer Voting
Make Paper More Accurate

PRINCETON, N.J. -- Rebecca Mercuri loves computers. But when it comes to counting votes in an election, she favors plain old paper. Computers, she says, just can't be trusted with our democracy.

"I fear for what's happening," says Ms. Mercuri, a 46-year-old authority on voting systems whose expertise is suddenly in great demand. Ms. Mercuri is no Luddite. She has programmed for decades and teaches computer science at Bryn...